US HB180

Requires the Secretary to publish on the internet all scientific and commercial data used as the basis for listing species as endangered or threatened, with exceptions for state-protected information and classified Department of Defense data

Mandates that affected states receive all data underlying species listing determinations before decisions are made, and expands the definition of "best scientific and commercial data available" to explicitly include data submitted by state, tribal, and county governments

Creates new annual reporting requirements to Congress on federal expenditures for Endangered Species Act-related lawsuits, including case details, agency costs, attorney fees, and settlement information

Establishes a publicly searchable online database of litigation expenditures, updated monthly, covering agencies including the Department of Interior, Forest Service, EPA, and National Marine Fisheries Service

Modifies attorney fee awards in ESA citizen suits to align with standard federal fee-shifting statutes (28 U.S.C. 2412 and 5 U.S.C. 504) rather than the current broader discretionary standard